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M54HC390 数据表(PDF) 8 Page - STMicroelectronics

部件名 M54HC390
功能描述  DUAL DECADE COUNTER
PDF  13 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

M54HC390 数据表(HTML) 8 Page - STMicroelectronics

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SWITCHING CHARACTERISTICS TEST WAVEFORM
TEST CIRCUIT ICC (Opr.)
WHEN THE OUTPUTS DRIVE CAPACITIVE LOAD, TOTAL CURRENT CONSUMPTION IS TO BE A SUM OF THE VALUE CALCULATED
FROM CPD AND
∆ICC OBTAINED FROM THE FOLLOWING FORMULA.
∆ICC =fCK . VCC .
Ca
2
+
fCK
2
. V
CC .
2
Cb
5
+
Cc
5
+
Cd
5
Ca – Cd ARE THE CAPACITANCE AT QA
∼ QD OUTPUT.
M54/M74HC390
8/13



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